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The P45 water level sensor is a plastic float switch, a level detection device that uses a mechanical float mechanism rather than any electronic sensing circuit. As the liquid level in a tank rises or falls, the float itself moves and mechanically actuates an internal switch, closing or opening a simple electrical contact. Because the switching action is entirely mechanical, it needs no external power supply or additional circuitry to function.
This kind of switch works across various liquids and pressure conditions, since its operation depends on the physical buoyancy of the float rather than on measuring any electrical property of the liquid itself, which makes it a robust, low-complexity option for straightforward tank level detection.
Electrically, it's rated for a maximum contact rating of 10W, a maximum switching voltage of 220V, and a maximum switching current of 0.5A, with a maximum breakdown voltage of 220VDC and a maximum carry current of 1A. Maximum contact resistance is rated at 100 milliohms. It operates across a temperature range of -10C to 60C, which covers most everyday water storage and pump-control applications.
Both the float ball and the float body are made from polypropylene (P.P.), a lightweight plastic that resists corrosion from constant water exposure. The switch body measures 57mm long, with a 35cm cable, and weighs about 13g.
Anyone building a simple pump control circuit, a tank overflow alarm, or a basic water level indicator who wants a robust, low-cost mechanical sensor rather than an electronic level-sensing circuit will find the P45 a straightforward, reliable choice.
No, it operates as a purely mechanical switch requiring no external power or circuitry.
Polypropylene (P.P.), for both the float ball and body.
Up to 220V at 0.5A maximum switching current.
-10C to 60C.
35cm.
| Brand | Generic |
|---|---|
| Selling unit | PCS |
